Stapler



FIG. 1 is a top and side perspective view of a stapler showing my new design;

FIG. 2 is a side elevational view thereof, the undisclosed opposite elevational view being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an elevational view taken from the left of FIG. 2; and,

FIG. 6 is an elevational view thereof taken from the right of FIG. 2. 

The ornamental design for a stapler, as shown and described. 